I bought a Stella 300D set after the battery of my MS900 failed. The 300D model has 2 150 lumen light heads. One is a spotlight and the other a floodlight. You can adjust the heads so that the floodlight is aimed close and the spotlight is further out.
I've used it a few times, and I've been very pleased with the set. The light is not as bright as the MS900, but the Stella puts out enough of light for me to ride with confidence on dark, rainy nights. I've not had a problem with the heads rotating out of position, but I've not been concerned about breaking the straps.
In my limited experience, the L&M products are well made and well designed, but they are expensive.